メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((142.47472676584 43.5982704436448, 142.474292612001 43.5985877205262, 142.473996983462 43.5988037398944, 142.473697076542 43.5990228948737, 142.472287851355 43.5980814326625, 142.471955357648 43.5978560559041, 142.47254236937 43.5974119416269, 142.472548231094 43.5974074996656, 142.472968617418 43.5970894469671, 142.473186228201 43.596924849795, 142.473237620675 43.5968822748464, 142.474997712758 43.5980724748585, 142.47472676584 43.5982704436448)) ^^http://www.opengis.net/ont/geosparql#wktLiteral